Full definitions of all the slang words listed above:

O

adverb

to some time that is not the present time, and/or some place that is not the present location.

Originally, used to suggest that a discussion be moved from a public discussion group to e-mail. Now additionally used in business meetings to forestall lengthy conversation about a topic not core to the meeting.

Those are all great issues. Unfortunately we have a lot to cover this afternoon, so let's take this discussion offline.

I'm not sure of the answer to that question. I'll follow up with you offline.